Nozzle for dusting machines



M 12; 1942.- R. R. ROOT NOZZLE FOR DUSTING MACHINES Filed April 10, 1941 INVENTOR.

P4424 190 7 M Mm 111 Km ATTORNEY!) embodiment of the invention Patented May 12, 1942 "UN l TED STATES PATENT OFF! CE r 2,282,828 i a No'zzL'E'FoR DUSTING MACHINES Y .Ralph- R. Root, Lakewood, Ohio, assi nor "to The Root Manufacturing Ohio, a corporation of Ohio Application April 1'0, 1941, Serial No. 387,923 8 Claims. -(Cl. 43-148) This invention relates to improvements in nozzles for dusting machines, that is to say nozzles for machines employed in spreading insecticides and other powdered material upon growing plants. An object of the invention is to provide means for causing a downwardly moving column of dust-laden air to be diverted laterally in all directions.

Another object is to provide a whirling distributionof the dust-laden air. c c

A further object is to provide means for driving the rotating distributor automatically.

Still another object is to so position the vanes which cause rotation that they will function additionally to agitate and break up further the dust-laden air emerging from the nozzle. I

O'ther objects and features of novelty will appear as I proceed with the description of that c c c which, for the purposes of the present application, I have illustrated in the accompanying drawing, in which g Fig. 1 is a perspective view of a wheeled implement showing the type of apparatus with which the present invention may be employed. 7 Fig. 2 is a vertical sectionalview of means for mixing dust with air and distributing it under pressure to tubular conductors. v

Fig. 3 is a central longitudinal section of a nozzle embodying the invention, and

Figs. 4 and -5 are transverse sectional views taken substantially on the lines 4'4 and 5-5 of Fig.3. V g p In the drawing to represents a'wheeled vehicle, preferably one with considerable ground clearance, so that it w The shaft 25 has ahead-26 which rests Company, Cleveland,

heights-but also because it is advisable in some cases to have the nozzles extend down into the spaces between rows of plants for dusting the sides of the latter;

In accordance with the invention I provide a mountingfor a rotatable shaft at the lower end of each conductor I1. In the present instance this is accomplished by providing ametalsleeve 20 to which is soldered 2| that is divided and curved at the middle to receive a small cylindrical housing 22 a thrust bearing 23 and a rotary bearing 24. upon the upper element of thrust bearing 23.

' ;snugly the conductor I 1 V V have the same outer diameter, is placed in posimaybe drawn through a field of growing plants of some height without injuring them. On it is supported a unit H comprising a hopper l2 in which the powderis carried, a compartment I 3 in which small quantities of powder are agitated, cylindrical chamber M in which powder is mixed with air and a fan l5 which induces air flow through chamber I 4 into the fan casing and out through funnel shaped connections IE to tubular conductors H. For a more detailed description of these parts reference may be had to'my Patent 2,157,630, issued May 9, 1939.

The vehicle I 0 supports a transverse rod l8' which carries clamps ii! that are adjustable along the length of the port the tubular connections i? so as to hold them at selected heights. This height adjustment is useful not only in that it enables dust rod and which adjustably sup' at its lower end. 28 of a size to receive andthe sleeve 20, which Sleeve '20 may have a flange 27 A piece of rubber hose tion on the conductor and the sleeve 20 is then ,inserted'into' the hose until the flange 21 contacts "the end of the latter, after which ring clamps 29 and '30 are tightened down. 'Shaft 25 below housing 22 is curved along an arcof a circle, preferably an arc of about 45 in extent, this curved portion being indicated at 3| in the drawing. It

metal bracket members 32 which have complementary grooves to receive the curved shaft. 7 Preferably these bracket at right angles to the plane through the curved members are arranged portion of the shaft, and therefore follow the same curvature as the shaft itself. .At theirouter ends these members have lips 33 and 33 which constitute vanes, each one extending somewhat less than half-way ac'ross'the bracket. An elbow forming a rotatable continuation of sleeve 20 is carried upon this bracket. It is conveniently formed in two halves take'th'e edges of the bracket and flanges 36 which are spot welded together. In addition to serving as a means for mounting the elbow on the shaft, the bracket members also form a partition means which divides the elbow into two passages. One of the vanes 33 and 33' is asso ciated with each of these passages and is oifset with respect to the axis of the passages so that the air acting against the vanes will produce a rotative couple. As shown in vanes 33 and 33' are of substantially flat-plate form and are located outwardly of the discharge ends of the passages and extend in transversely inclined relation to the openings of such dis-' charge ends. 7

The elbow 34 is preferably a 45 elbow, al-

to be applied efficiently to plants of diiferent though this angle may be varied more or less.

a double walled partition enclosing is gripped by two sheet I 34, having grooves 35 to the drawing, the

The dust-laden air travels at a rapid rate from the conductor I! through the sleeve 20 and the elbow 34, being directed by the latter and by the bracket members 32 downwardly and outwardly and against the vanes 33. Its impact against the vanes tends to revolve them clockwise, as viewed in Fig. 5. The rotation however is necessarily around the upper straight shaft 25, and hence the bracket and elbow revolve, thereby swinging the mouth of the elbow laterally in all directions to distribute a cloud of dust over a relatively wide path as the vehicle advances. Two positions I of the elbow and associated parts are indicated by the full and dotted lines in Fig. 3. e

. The whirling of the air in the lower part of the elbow also sets up centrifugal force tending to accentuate the outward travel of the delivered air, and the revolving vanes 33 and 33 tend to break up or agitate the dust, that is to say vane 33 tends to divert it upwardly and vane 33' tends to divert it downwardly. By using elbows of different angular extent the action of the device may be varied, that is the smaller the angle the more rapid will be the rotation, and the larger the angle the greater will be the lateral extent of the dust cloud. There is a practical limit to the size of this angle however for when it becomes too great rotation of the elbow will cease.

Variations from the described structure may be employed. Accordingly I desire it 'to be understood that the scope of the invention is to be i regarded as defined exclusively by the appended claims rather than by the foregoing description or the accompanying illustration,

Having thus described my invention, I claim:

1. In apparatus of the character described, a

conductor for dust-laden air, a rotatably mounted spreader at the end of said conductor, said spreader comprising an elbow having partition means dividing the same into a plurality of passages arranged to receive air from said conductor and adapted to deflect the air laterally, and vane means at the outer end of said passages for rotating the elbow in response to air flow therethrough.

2. In apparatus of the character described,'a

conductor for dust-laden air, a spreader at the end of said conductormounted to turn about the axis of the conductor, said spreader comprising an elbow having partition means dividing, the

same into a plurality of passages arranged to receive air from said conductor and adapted to deflect the pair laterally, and vane means located at the outer end of said passages and carried'by said elbow for rotating the elbow in response to air flow thereth-rough..

3. In combination, a conductor for dust-laden air, a shaft axially mounted in the end of said conductor, said shaft having an extension deflected laterally, a bracket carried by said extension, an elbow carried by said bracket, and means for rotating said shaft.

tension, an elbow carried by said bracket, and

vane means also carried by said bracket for rotating the shaft in response to air flow.

5. In combination, a conductor for dust-laden air, a shaft axially mounted in the end of said conductor, said shaft having an extension deflected laterally, a bracket carried by said extension, a 45 elbow carried by said bracket, and vane means fixed in the outer end of said elbow for rotating said shaft and agitating the dust discharged by the elbow.

6'. Incombination, a conductor for dust-laden air, a spreader at the end of said conductor, and pivot means connecting the spreader with said conductor and mounting the spreader for rotation, said spreader comprising a curved tubular member having partition means therein extending substantially from said pivot means to the discharge end of such tubular member, and vane means arranged outwardly of the discharge end of said tubular member in transversely inclined relationto the openings of said discharge end so as to be acted upon by the moving air for whirling the spreader.

'7. In combination, a conductor for dust-laden air, a rotatably mounted spreader at the end of said conductor comprising an elbow arranged to receive dust-laden air from said conductor and adapted to distribute the dust-laden air laterally during rotation of the elbow, said elbow having a partition therein dividing the same into two passages, and means for rotating said elbow in response to the flow of air therethrough comprising a pair of vanes connected to the partition on opposite sides of the axis of the elbow and arranged to project outwardly from the elbow in transversely inclined relation to the discharge ends of said passages so that the air being discharged -,by the elbow impinges against said vanes.

8. In apparatus of the character described, a conductor for dust-laden air, a spreader at the end of said conductor mounted to turn about the axis of the conductor, said spreader comprising RALPH R. ROOT. 

